The axis for belt paper guiding roll are polished & hard chrome plating.

所有的皮带轴、导纸轴 及 走纸辊表面经磨削加工并电镀硬铬.

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The composition and the influence factors of brush plating solution of high efficient hard - chrome are studied.

介绍了高效硬铬刷镀溶液的组成,工艺条件对溶液性能的影响.

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